Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/163722
Title: Lateral slip rate of Alhama de Murcia fault (SE Iberiam Peninsula) based on a morphotectonic analysis: comparison with paleoseismological data
Author: Ferrater Gómez, Marta
Ortuño Candela, María
Masana, Eulàlia
Martínez-Díaz, José J.
Pallàs i Serra, Raimon
Perea Manera, Héctor
Baize, S.
García-Meléndez, E.
Echeverria, Anna
Tockwell, T.
Sharp, Warren D.
Arrowsmith, R.
Keywords: Paleosismologia
Tectònica
Múrcia (Múrcia)
Paleoseismology
Tectonics
Murcia (Murcia)
Issue Date: 2017
Publisher: Elsevier Ltd
Abstract: To define the seismic potential of the left-lateral strike-slip Alhama de Murcia fault (SE Iberian Peninsula), we calculated its slip rate by measuring offset linear features of known age using a morphotectonic analysis. The Lorca-Totana section of the fault yielded a minimum slip rate of 1.0 ± 0.2 mm/a for the past 30 ka, based on a channel whose age is estimated by OSL technique. The minimum left-lateral slip rate of the Goñar-Lorca section is 1.6-1.7 mm/a for the past 200 ka, based on eight offset surface channels, previously mapped alluvial fans dated by TL, and by new U-series dating of pedogenic carbonate. The U-series technique was used here for first time in the Iberian Peninsula to date small amounts (mg) of pedogenic carbonate. According to the newly estimated slip rate values, the Alhama de Murcia fault is one of the most active faults in the Eastern Betics Shear Zone. These values are larger and have fewer uncertainties in comparison with previous slip rates estimations. In the Lorca-Totana section, the new lateral slip rate is compared with a slip rate calculated by means of a paleoseismic study showing good agreement between the values obtained with the two approaches. We encourage the combination of paleoseismology and morphotectonic analysis to obtain reliable slip rates for faults with scarce evidence of late Holocene slip.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.quaint.2017.02.018
It is part of: Quaternary International, 2017, vol. 451, p. 87-100
URI: http://hdl.handle.net/2445/163722
Related resource: https://doi.org/10.1016/j.quaint.2017.02.018
ISSN: 1040-6182
Appears in Collections:Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)

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